Which symptom is NOT typically associated with an ileus?

An ileus is a condition characterized by the absence of normal peristalsis in the intestines, leading to a functional blockage and resulting in various symptoms. When assessing symptoms associated with an ileus, hyperactive bowel sounds are not typically present. Instead, ileus often presents with decreased or absent bowel sounds, as the intestinal motility is significantly impaired.

In contrast, fever may occur due to underlying infections or inflammation in conjunction with the ileus. Nausea and vomiting are common symptoms as the body's response to the obstruction can lead to a buildup of intestinal content and gastric distention. Abdominal pain also occurs due to the distention and the resultant infiltration of nerve endings in the bowel wall.

Understanding the correct answer is crucial as it highlights that in an ileus, the expected signs include decreased bowel activity rather than hyperactivity, which would more likely indicate a condition such as bowel obstruction or a gastrointestinal infection.